20322880

素因数分解:

$2^6\times 5^1\times {\mathrm{41}}^1\times {\mathrm{1549}}^1$

素因数の和:1607

約数の個数: 56

約数和(自身を含む): 49606200

約数和(自身を除く): 29283320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 64, 80, 82, 160, 164, 205, 320, 328, 410, 656, 820, 1312, 1549, 1640, 2624, 3098, 3280, 6196, 6560, 7745, 12392, 13120, 15490, 24784, 30980, 49568, 61960, 63509, 99136, 123920, 127018, 247840, 254036, 317545, 495680, 508072, 635090, 1016144, 1270180, 2032288, 2540360, 4064576, 5080720, 10161440, 20322880]

約数ペア:

[(1, 20322880), (2, 10161440), (4, 5080720), (5, 4064576), (8, 2540360), (10, 2032288), (16, 1270180), (20, 1016144), (32, 635090), (40, 508072), (41, 495680), (64, 317545), (80, 254036), (82, 247840), (160, 127018), (164, 123920), (205, 99136), (320, 63509), (328, 61960), (410, 49568), (656, 30980), (820, 24784), (1312, 15490), (1549, 13120), (1640, 12392), (2624, 7745), (3098, 6560), (3280, 6196)]